Sutnan Capacitor Information

Aug 20, 2008 at 04:01 o\clock

Specifications Ceramic Capacitor

by: hkcapacitor   Keywords: Ceramic, Capacitor

Ceramic capacitors have a solid body made of high-temperature, ceramic resistive material with bonded metal contacts.

Specifications Ceramic Capacitor:
Ceramic COG (NPO) - Ceramic COG (NPO) capacitors have a high Q, low K, temperature-compensated dielectric and stable electrical properties under varying voltage, temperature, frequency and time. They are suitable for low-lost circuits and for timing and tuning applications.

There are several unofficial, colloquial temperature coefficient designations for capacitors. The temperature coefficient is given as P for positive and N for negative, followed by a 3-digit value in ppm/°C. For example, P100 is +100 ppm/°C and N220 is -200 ppm/°C. The exception to this system is NPO where the letter “O” instead of the number “0” is used; however, the term NP0 is not uncommon. Both NPO and NP0 indicate that the capacitor is stable with temperature.

Ceramic X7R - Ceramic X7R (BX) capacitors have moderate K values and are temperature-stable. They exhibit moderate changes in electrical properties under conditions of changing temperature, voltage, and frequency. X7R capacitors are suitable for bypass, coupling, and frequency discrimination circuit applications. X7R capacitors exhibit no more than 15% capacitance deviation over a -55 °C to +125 °C temperature range.

Ceramic Z5U - Ceramic Z5U capacitors are Class III devices with a dielectric that exhibits a maximum capacitance change of +22% - 56% over an operating temperature range of +10 °C to + 85 °C.

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Aug 20, 2008 at 03:59 o\clock

Fused Tantalum Capacitor

by: hkcapacitor   Keywords: Tantalum, Capacitor

AVX’s TAW series of fused tantalum capacitor protect against damaging high DC leakage currents at high currents. Short circuit failure mode protection is accomplished using an internal fuse connected in series with the capacitor.

When the fuse exceeds its current limit, the fused capacitor will fail safe by effectively removing itself from the circuit by creating a high resistance path of above 10MΩ. In some cases this can mean the difference between a total circuit loss and barely detectible performance degradation.

The TAW series tantalum capacitors are fully lead-free and RoHS compliant.